Q JEE MAIN 2019

The aerosol is a kind of colloid in which

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Peptization is a

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The mass of gas adsorbed, $x$, per unit mass of absorbate, $m$, was measured at various pressures, p. A graph...

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Q JEE MAIN_2019_

A gas undergoes physical adsorption on a surface and follows the given Freundlich adsorption isotherm equation $\frac{\mathrm{x}}{\mathrm{m}}=\mathrm{kp}^{0.5}$ Adsorption of the...

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Q JEE MAIN 2020

Which of the following is used for the preparation of colloids?

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Amongst the following statements regarding adsorption, those that are valid are (a) $\Delta \mathrm{H}$ becomes less negative as adsorption proceeds...

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Q JEE MAIN 2019

Among the following, the INCORRECT statement about colloids is

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Q JEE MAIN_2019_

The principle of column chromatography is:

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Q JEE MAIN 2019

For coagulation of arsenious sulphide sol, which one of the following salt solution will be most effective?

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Q JEE MAIN 2019

For coagulation of arsenious sulphide sol, which one of the following salt solution will be most effective?

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Q JEE MAIN 2020

A diatomic molecule $X_2$ has a body-centred cubic (bcc) structure with a cell edge of 300 pm . The density...

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Identify the correct molecular picture showing what happens at the critical micellar concentration (CMC) of an aqueous solution of a...

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Q JEE MAIN 2019

Among the following, the false statement is

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Q JEE MAIN 2020

For Freundlich adsorption isotherm, a plot of log (x/m) (y-axis) and $\log p$ (x-axis) gives a straight line. The intercept...

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Q JEE MAIN 2020

A crystal is made up of metal ions $M_1$ and $M_2$ and oxide ions. Oxide ions form a ccp lattice...

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Q JEE MAIN 2019

An example of solid sol is.

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An element crystallises in a face-centred cubic (fcc) unit cell with cell edge a. The distance between the centres of...

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As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order

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Q JEE-MAIN 2020

Adsorption of a gas follows Freundlich adsorption isotherm. If x is the mass of the gas adsorbed on mass m...

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Q JEE MAIN 2019

The correct option among the following is :

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Q JEE Main 2019

Which of the following is not an example of heterogeneous catalytic reaction?

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Q JEE MAIN 2020

Match the following

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Q JEE MAIN 2019

Among the colloids cheese (C), milk (M) and smoke (S), the correct combination of the dispersed phase and dispersion medium,...

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Q JEE MAIN 2020

For the following Assertion and Reason, the correct option is Assertion : For hydrogenation reactions, the catalytic activity increases from...

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Q JEE-MAIN 2020

An ionic micelle is formed on the addition of

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Q JEE MAIN 2019

10 mL of 1 mM surfactant solution forms a monolayer covering $0.24 \mathrm{~cm}^2$ on a polar substrate. If the polar...

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Q JEE MAIN 2021

Lyophilic sols are more stable than lyophobic sols because

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Q JEE MAIN 2021

$\mathrm{CH}_4$ is adsorbed on 1 g charcoal at $0^{\circ} \mathrm{C}$ following the Freundlich adsorption isotherm. 10.0 mL of $\mathrm{CH}_4$ is...

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Q JEE MAIN 2019

Haemoglobin and gold sol are examples of :

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Q JEE MAIN 2021

Which one of the following is correct for the adsorption of a gas at a given temperature on a solid...

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Q JEE-MAIN 2021

The sol given below with negatively charged colloidal particles is :

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Q JEE MAIN 2021

Tyndall effect is more effectively shown by :

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Q JEE MAIN 2021

Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is...

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Q JEE MAIN 2021

Match List – I with List - II.

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Q JEE MAIN 2021

Select the graph that correctly describes the adsorption isotherms at two temperatures $T_1$ and $T_2\left(T_1>T_2\right)$ for a gas : $(x$...

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Q JEE MAIN 2021

Match List I with List II : Choose the most appropriate answer from the options given below

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Q JEE MAIN 2019

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The conditions given below are in the context of observing Tyndall effect in colloidal solutions: (A) The diameter of the...

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Q JEE MAIN 2021

When silver nitrate solution is added to potassium iodide solution then the sol produced is :

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$\mathrm{CO}_2$ gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of $\mathrm{CO}_2$ adsorbed...

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Q JEE MAIN 2019

0.27 g of a long chain fatty acid was dissolved in $100 \mathrm{~cm}^3$ of hexane. 10 mL of this solution...

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Q JEE-MAIN 2021

For the coagulation of a negative sol, the species below, that has the highest flocculating power is :

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Q JEE MAIN 2021

The charges on the colloidal CdS sol and $\mathrm{TiO}_2$ sol are, respectively :

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Q JEE Main 2019

Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, $x$ is the mass of the gas adsorbed...

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Q JEE-Main-2021

A colloidal system consisting of a gas dispersed in a solid is called a/an :

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Q JEE MAIN 2021

The INCORRECT statements below regarding colloidal solutions is :

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Q JEE MAIN 2021

Most suitable salt which can be used for efficient clotting of blood will be :-

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Q JEE MAIN 2021

Which one of the following statements is FALSE for hydrophilic sols ?

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The nature of charge on resulting colloidal particles when $\mathrm{FeCl}_3$ is added to excess of hot water is :

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3.12 g of oxygen is adsorbed on 1.2 g of platinum metal. The volume of oxygen adsorbed per gram of...

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Q JEE MAIN 2021

In Freundlich adsorption isotherm, slope of AB line is:

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In Freundlich adsorption isotherm at moderate pressure, the extent of adsorption $\left(\frac{x}{m}\right)$ is directly proportional to $P^x$. The value of...

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Q JEE MAIN 2022

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R....

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Ionic radii of cation $\mathrm{A}^{+}$and anion $\mathrm{B}^{\prime \prime}$ are 102 and 181 pm respectively. These ions are allowed to crystallize...

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Q JEE MAIN 2022

For micelle formation, which of the following statements are correct? (A) Micelle formation is an exothermic process. (B) Micelle formation...

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Q JEE MAIN 2022

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R....

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Q JEE MAIN 2022

Among the following the number of curves not in accordance with Freundlich adsorption isotherm is

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Given below are two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R) Assertion...

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100 mL of 5% (w/v) solution of NaCl in water was prepared in 250 mL beaker. Albumin from the egg...

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Q JEE MAIN 2022

Solve the fig-:

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Q JEE MAIN 2022

Match List-I with List-II. Choose the correct answer from the options given below:

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Q JEE MAIN 2022

Which of the following is a correct statement ?

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Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes because

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Q JEE MAIN 2022

Match List-I with List-II Choose the correct answer from the options given below:

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The Zeta potential is related to which property of colloids”

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Q JEE MAIN 2022

Incorrect statement for Tyndall effect is :-

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Q JEE MAIN 2025

A capillary tube of radius 0.1 mm is partly dipped in water (surface tension $70 \mathrm{dyn} / \mathrm{cm}$ and glass...

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Q JEE MAIN 2023

The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is ____ A. The catalyst...

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Coagulating value of electrolytes $\mathrm{AlCl}_3$ and NaCl for $\mathrm{As}_2 \mathrm{~S}_3$ are 0.09 and 50.04 respectively. The coagulating power of $\mathrm{AlCl}_3$...

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Q JEE MAIN 2023

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion...

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Q JEE MAIN 2023

https://competishun.com/ferric-chloride-is-applied-to-stop-bleeding-because/

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Q JEE MAIN 2023

A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of...

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The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is ______ Gem stones,...

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A metal M crystallizes into two lattices:- face centred cubic (fee) and body centred cubic (fcc) with unit cell edge...

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Q JEE MAIN 2023

Testosterone, which is a steroidal hormone, has the following structure The total number of asymmetric carbon atom/s in testosterone is_______

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Based on the given figure, the number of correct statement/s is/are _______ A. Surface tension is the outcome of equal...

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Q JEE MAIN 2023

The graph of $\log \frac{x}{m}$ vs $\log p$ for an adsorption process is a straight line inclined at an angle...

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Q JEE MAIN 2023

In figure, a straight line is given for Freundrich Adsorption $(y=3 x+2.505)$. The value of $\frac{1}{n}$ and $\log K$ are...

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Q JEE MAIN 2023

Given below are two statements: Statement I : Nickel is being used as the catalyst for producing syn gas and...

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Match List–I with List–II Choose the correct answer from the options given below :

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The number of statement/s which are the characteristics of physisorption is ___________. A. It is highly specific in nature B....

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Q JEE MAIN 2023

Match List–I and List–II. Choose the correct answer from the options given below:

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Q JEE MAIN 2023

Match List I with List II

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Q JEE MAIN 2023

What happens when a lyophilic sol is added to a lyophobic sol?

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Q JEE MAIN 2023

The enthalpy change for the adsorption process and micelle formation respectively are

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Q JEE MAIN 2023

Four gases A, B, C and D have critical temperatures 5.3, 33.2, 126.0 and 154.3 K respectively. For their adsorption...

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Q JEEE MAIN 2023

Which of the following represent the Freundlich adsorption isotherms?

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Q JEE MAIN 2023

Match List-I with List-II Choose the correct answer from the options given below:

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Q JEE MAIN 2023

Statement I: For colloidal particles, the values of colligative properties are of small order as compared to values shown by...

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Q JEE MAIN 2023

Adding surfactants in non polar solvent, the micelles structure will look like

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN 2023

Which of the following salt solutions would coagulate the colloid solution formed when FeCl3 is added to NaOH solution, at...

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Q JEE MAIN 2023

Statement I : For colloidal particles, the values of colligative properties are of small order as compared to values shown...

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Q JEE MAIN 2023

The variation of the rate of an enzyme catalyzed reaction with substrate concentration is correctly represented by graph

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